*{
    margin:0;
    padding:0;
    list-style: none;
    font-size: 15px;
}
.board{
    width: 100%;
    height: 400px;
    border-top:1px solid blue;
    border-bottom:1px solid blue;
}
.message{
    width:100%;
    height:40px;
    background-color: rgb(0, 255, 255);
    border-bottom: 1px solid red;
    display: inline-flex;
    justify-content:space-between;
    align-items: center;
}